package com.atguigu.springcloud.controller;

import com.atguigu.springcloud.entity.CommonResult;
import com.atguigu.springcloud.entity.Payment;
import com.atguigu.springcloud.lb.LoadBalaner;
import com.netflix.appinfo.InstanceInfo;
import lombok.extern.slf4j.Slf4j;

import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    //public static final String PAYMENT_URL = "http://localhost:8001";//单机
    public static final String PAYMENT_URL = "http://cloud-payment-service";//集群，负载均衡，需要配置@LoadBalanced

    @Resource
    private LoadBalaner loadBalaner;

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("cloud-payment-service");
        if(instances==null && instances.size()==0){
            return null;
        }
        ServiceInstance instances1 = loadBalaner.instances(instances);
        URI uri = instances1.getUri();
        return restTemplate.getForObject(uri+"/payment/lb", String.class);
    }

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        log.info(payment.getSerial());
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create/", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id, CommonResult.class);
    }


}
